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"When Fish Fly" is the second episode of the third season of Wild Kratts, originally airing on PBS Kids on April 10, 2014. Overall, it is the 68th episode of the series. The episode was written and directed by Chris Kratt.

In this episode, when Martin insults Aviva by implying that inventing is an easy and boring job, Aviva, Koki, and the Kratt brothers switch roles: Aviva and Koki do the field work, while the Kratt brothers build the inventions. The animal serving as inspiration: flying fish.


The episode begins with a live action segment. The Kratt brothers mention flying fish after talking about the fins of fish. Afterwards, they ask their "What if?" question and the show transitions into the cartoon segment.

Aviva and Koki are fixing a crushed Amphi-Sub when the Kratt brothers splash them as they dive down to go on another adventure. Martin apologizes to them and says "We can't just sit around all day making inventions." Aviva takes this as an insult and uses a robot arm to seize the two. Aviva says to them that inventing takes hard work and skill, and Koki sides with her. The Kratt brothers disagree and say that inventing is "a lot easier" than being out in the open and doing field work. They then switch roles: the Kratt brothers build the invention, which they decide is some sort of flying machine, while Aviva and Koki do the field work and find inspiration in an animal.

Aviva and Koki head off in their motor boat. However, the Kratt brothers ask them if they are forgetting something, which they are. The Kratt brothers hand over some stuff to Aviva and Koki, including the extra socks, and then they leave. Martin and Chris enter the Tortuga and Martin messes with some buttons which causes the Tortuga's alarm to go off and begin a meltdown. After unsuccessful attempts to turn it off, it eventually turns off by itself. Chris tells Martin not to touch any buttons. Jimmy asks the brothers what they are doing. They tell him that they will do the inventing, while Aviva and Koki are creature adventuring. The Kratt brothers start out by building a fragile-looking jetpack-like device. Jimmy teleports it Aviva and Koki, and Aviva puts it on. It goes out of control and hurls her into the water. A flying fish ends up on Aviva's head, and later everyone decides that the inspiration for the flying machine is the flying fish rather than a bird. Aviva miniaturizes and jumps into the water. She names one of the flying fish "Fishy", but Martin doesn't like the name. While trying to provoke the fish to fly with some bread, Koki falls into the water, scaring away the fish, and Aviva holds tightly to Fishy, scanning his wings as he swims and flies away. With the data, the Kratt brothers begin building another flying machine they call the "Flying Fishinator". But for it to move, the Kratt brothers need to know the "engine" of the flying fish. Koki miniaturizes and jumps into the water. She hangs onto the body of Fishy, but trouble then starts when Click and Whistle (from "Speaking Dolphinese") startle the flying fish to try and eat them. As the flying fish swim and fly away, Koki observes the movements of the tail-fin. Although they are able to avoid getting eaten by the two dolphins, Koki and the flying fish are chased to a piece of foliage located at a distance that neither Aviva nor the Kratt brothers can track. The flying fish lets go of Koki and strands her on a remote foliage. As the foliage starts sinking when the flying fish begin releasing strings of eggs, the Kratt brothers finish the Flying Fishinator and take it to the air to rescue Koki. Koki goes underwater and discovers that the flying fish are laying too many eggs which is causing the foliage to sink. Koki loses her mask after a flying fish accidentally knocks it off. She gets out of the ocean, gasping for air, and yells for help.

Knowing that the competition has gone too far, Aviva says that she should be back at the lab and making a flying fish power disc and she tries to go back but she is unable to because the flying fish are gumming up the motor by laying eggs and calls the Kratt brothers and asks what they are doing. They tell her that they're flying to the rescue on their invention. Aviva tells them that it'll never hold because it's an engineering nightmare. Aviva says that the friendly competition is going haywire and they should have stuck with whatever they each know and love, which is inventing for her. Chris and Martin try to hover their invention but they are unable to and they admit they lost the competition. Aviva admits that although she didn't win the competition, she still knows how to invent. She pulls out her invention kit and begins making flying fish discs. Shortly after, she is done, and she waits for the Kratt brothers so that she hands over the flying fish discs to the Kratt brothers, so that the Wild Kratts team works the way it was meant to in the first place. Not long after, the Flying Fishinator crashes near her and the Kratt brothers fall into the ocean. Aviva finally finds the Kratt brothers she was looking for. Chris and Martin admit to Aviva that the Flying Fishinator didn't exactly soar. Aviva admits that their creature adventure never took off either. The three end all bets, and Aviva tells the Kratt brothers that if they're going to rescue Koki, they're going to do it the Wild Kratts way. She hands over the discs and the Creature Power Suits to them. The Kratt brothers activate their Flying Fish Power. They manage to pull Koki off the foliage before she drowns. They take Koki back to the Tortuga, and Aviva and Koki reunite with their stations and promise to never leave them again. Martin and Chris then ask if Aviva and Koki are forgetting something. They indeed are forgetting something. They give back all the stuff they gave them earlier before they left and tell them to enjoy. Not only are both sides happy to be back, they also admit that their roles are equally difficult and exciting. Aviva and Koki tell Chris and Martin that creature adventuring takes some know-how and they are really great at it, in which in turn Chris and Martin tell Aviva and Koki that inventing is challenging and they're the best there is. They agree to stick with their own jobs going forward. The Kratt brothers go back out to creature-adventure with the flying fish and reactivate Flying Fish Powers again and fly off into the horizon.

The show transitions into the concluding live action segment. The Kratt brothers catch a flying fish at night. After getting a close look, they release the fish and conclude the episode by saying "Keep on creature adventuring; we'll see you on the creature trail!"




Note: Featured animals are in bold.

Computer Images


Note: Mentioned animals are linked to Wikipedia.

Live Action

Note: Live action animals are linked to Wikipedia.


  • This is the first time the Kratt brothers invent an invention.
  • This is the second appearance of Click and Whistle from "Speaking Dolphinese".
  • This is the first time a Wild Kratts member other than the Kratt brothers almost died. In this case, it's Koki.

Key Facts and Creature Moments

  • Flying fish can fly because their fins are similar to wings. The fins are curved at the top, which makes air flowing at the bottom slower than air flowing at the top. This creates a difference in pressure, and therefore, the fish flies.
  • Flying fish fly to avoid predators.


Wild Kratts episodes
Seasons: 123456
Season 1

"Mom of a Croc" • "Whale of a Squid" • "Aardvark Town" • "Flight of the Draco" • "Mystery of the Squirmy Wormy" • "Platypus Cafe" • "Polar Bears Don't Dance" • "Build It Beaver" • "Voyage of the Butterflier XT" • "Honey Seekers" • "Bass Class" • "Fireflies" • "Mystery of the Weird Looking Walrus" • "Tazzy Chris" • "Octopus Wildkratticus" • "Walk on the Wetside" • "Elephant in the Room" • "Let the Rhinos Roll!" • "Kickin' It With the Roos" • "The Blue and the Gray" • "Falcon City" • "Koala Balloon" • "Cheetah Racer" • "Kerhonk" • "Mimic" • "Caracal-Minton" • "Zig-Zagged" • "A Huge Orange Problem" • "Seasquatch" • "The Food Chain Game" • "Masked Bandits" • "Flight of the Pollinators" • "The Gecko Effect" • "Little Howler" • "Quillber's Birthday Present" • "A Bat in the Brownies" • "Stuck on Sharks" • "Birds of a Feather" • "Googly Eye: The Night Guru" • "Raptor Round Up"